Basis of Presentation and Significant Accounting Policies (Variable Interest Entities) (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Straight-Line Rent Receivable | Senior Living Communities
Variable Interest Entity [Line Items]
Carrying Amount	$ (90,196)
Maximum Exposure to Loss	94,349
Straight-Line Rent Receivable | Senior Living Management
Variable Interest Entity [Line Items]
Carrying Amount	(24,500)
Maximum Exposure to Loss	24,500
Straight-Line Rent Receivable | Bickford Senior Living
Variable Interest Entity [Line Items]
Carrying Amount	(32,976)
Maximum Exposure to Loss	46,023
Notes Receivable | Encore Senior Living
Variable Interest Entity [Line Items]
Carrying Amount	(39,091)
Maximum Exposure to Loss	53,416
Notes Receivable | Timber Ridge OpCo
Variable Interest Entity [Line Items]
Carrying Amount	(5,000)
Maximum Exposure to Loss	5,000
Notes Receivable | Watermark Retirement
Variable Interest Entity [Line Items]
Carrying Amount	(7,875)
Maximum Exposure to Loss	10,898
Notes Receivable | Montecito Medical Real Estate
Variable Interest Entity [Line Items]
Carrying Amount	(20,255)
Maximum Exposure to Loss	50,000
Notes Receivable | Vizion Health
Variable Interest Entity [Line Items]
Carrying Amount	(19,791)
Maximum Exposure to Loss	23,015
Notes Receivable | Navion Senior Solutions
Variable Interest Entity [Line Items]
Carrying Amount	(8,127)
Maximum Exposure to Loss	$ 14,065